// operating with variables
#include <iostream>
using namespace std;
int main ()
{
// declaring variables:
int a, b;
int result;
// process:
a = 5;
b = 2;
a = a + 1;
result = a - b;
// print out the result:
cout << result;
// terminate the program:
return 0;
}
simplify it
= kT
| 12/09/2009 Dulu.. kecik2.. aku tgok discovery channel.. aku berminat gila2 ngan bintang2, planet.. lama2 tu.. aku makin tertarik ngan black hole.. sbb.. dier akan menarik apa saja yg berdekatan dengannya.. walaupun cahaya.. korang x pelik ker? cahaya yang x der jisim leh tertarik ke dalamnye.. aku makin pening maka.. aku bercita2 nak jadi astronomer.. time upu lpasan matrik tu... x lepas.. mgkin ramai dak 4.00 apply kot.. haizz..sbb tu la aku amik sains fizik.. bukan suka2.. sbb leh further dalam course astrophysic atau aeroangkasa.. yaa.. balik ke soalan aku tadii.. nie la jawapan dier : So as a star collapses it's gravity becomes more concentrated so it collapses further still. Most physicists believe that it will therefore keep on collapsing indefinitely, becoming infinitely small. The gravity as you get up really close to it will therefore increase indefinitely and so it’s gravity will become infinitely large at its infinitely small surface. There will therefore be a region around it where even light will not escape and this is called it’s ‘Event Horizon’. The event horizon therefore indicates a region where the escape velocity needed to escape the gravity of the object is greater than the speed of light. It does not indicate the actual size of the black hole which is, as I said before, infinitely small. If our Sun suddenly collapsed into a black hole it would not affect the orbit of the planets in our solar system because it’s overall gravity would not be affected. Incidentally, some ‘light’ can escape a black hole and is known as Hawkin Radiation, which can cause a black hole to slowly ‘evaporate’ Sumber |
